Polarons are quasiparticles that easily form in polarizable materials due to the coupling of
excess electrons or holes with ionic vibrations. These quasiparticles manifest themselves in …

The Hubbard model is the simplest model of interacting fermions on a lattice and is of similar
importance to correlated electron physics as the Ising model is to statistical mechanics or the …

Impressive performance of hybrid perovskite solar cells reported in recent years still awaits a
comprehensive understanding of its microscopic origins. In this work, the intrinsic Hall …

Numerical results for ground-state and excited-state properties (energies, double
occupancies, and Matsubara-axis self-energies) of the single-orbital Hubbard model on a …

Finite-density lattice QCD aims for the first-principle study of QCD at finite density, which
describes the system consisting of many quarks. The main targets are systems such as …

Charge transport in crystalline organic semiconductors is intrinsically limited by the
presence of large thermal molecular motions, which are a direct consequence of the weak …

Quantum impurity models describe an atom or molecule embedded in a host material with
which it can exchange electrons. They are basic to nanoscience as representations of …

We use tensor network techniques to obtain high-order perturbative diagrammatic
expansions for the quantum many-body problem at very high precision. The approach is …

The Hubbard model represents the fundamental model for interacting quantum systems and
electronic correlations. Using the two-dimensional half-filled Hubbard model at weak …

Polarons are quasiparticles that emerge from the interaction of fermionic particles with
bosonic fields. In crystalline solids, polarons form when electrons and holes become …